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Related Concept Videos

Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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The Effect of Aging on Tissues01:19

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Changes in the Appendicular Skeleton with Age01:09

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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

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Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are...
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Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
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Aging in Brazil.

Lycia Tramujas Vasconcellos Neumann1, Steven M Albert1

  • 1Department of Behavioral and Community Health Sciences, School of Public Health, University of Pittsburgh, Pennsylvania.

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Brazil

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Area of Science:

  • Gerontology
  • Public Health Policy
  • Sociology

Background:

  • Brazil's population is rapidly aging, exacerbating existing socioeconomic and regional inequalities.
  • Despite policies aimed at ensuring dignified aging, their implementation faces significant challenges.
  • Projections indicate 64 million seniors by 2050, highlighting an urgent need for policy intervention.

Purpose of the Study:

  • To analyze the challenges in implementing policies for the well-being of older adults in Brazil.
  • To identify critical public policy issues related to Brazil's aging population.
  • To examine the effectiveness of current legal and policy frameworks for seniors.

Main Methods:

  • Policy analysis of existing legislation and national plans for the elderly.
  • Review of socioeconomic and regional disparities impacting older adults.
  • Assessment of implementation gaps in social security and long-term care policies.

Main Results:

  • Policy and legal frameworks exist but suffer from slow, uncoordinated, and under-resourced implementation.
  • Significant disparities persist, affecting the quality of life and access to services for older Brazilians.
  • Key areas requiring immediate attention include the National Policy of the Elderly, Social Security Reform, and long-term care.

Conclusions:

  • Brazil must urgently address policy implementation deficits to support its rapidly growing senior population.
  • A comprehensive and coordinated approach is needed to tackle the complex challenges of aging in Brazil.
  • Failure to act will exacerbate inequalities and compromise the dignity of millions of older adults.